Regulator for controlling the descent of elevator-cars.



No. 703,246. I Patented luha '24, I902. A. GALLINANT.

REGULATOR Fun CONTROLLING THE DjESGENT OF ELEVATOR CARS.

(Application filed Aug. 81, 1899. Renewed Janl 27, 1902.)

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UNITED STATES PATENT ()FFICE.

ACHILLE GALLINANT, OF WEST I-IOBOKEN, NEIV JERSEY.

REGULATOR FOR CONTROLLING THE DESCENT 0F ELEVATOR-CARS.

SPECIFICATION formingpart of Letters Patent No. 703,246, dated June 24:,1902. Application filed August 31. 1899 Renewed January 27, 1902. RerialNo. 91,392. (No model.)

To (tZZ whont it may concern:

Be it known that I, -AOHILLE GALLINAN'I, a citizen of the United States,and a'residen't of West Hoboken, in the county of Hudson and'State ofNew Jersey, have invented certain new and useful Improvements inRegulators for Controlling the Descent of. Elevator-Oars, of which thefollowing is a specification.

My invention relates to regulators for controlling the descent ofelevator-cars, and is designed as an improvement on the patent of AdopheGallinant, No. 287,922, dated Novemher 6, 1883.

My invention consists in the novel devices herein shown and described.

In the accompanying drawings I have shown one embodimentiof my inventionand in which it is applied to an elevator that is raised and lowered bymeans of a cable.

Figure l is a vertical section of an elevatorshaft and car, showing theapplication of my invention thereto. Fig. 2 isaside elevation, on anenlarged scale, of myimproved speedregulating apparatus and of thelifting-cable and pulleys. Fig. 3 is a plan view of the same. Fig. 4. isa side elevation, partly broken away, of one wing of the governor-fan.Fig. 5 is a cross-section of the same with the leaves or pinions-folded.Fig. 6 is asimilar View with the leaves or pinions open or spread out.

Similar letters represent like parts in all the figures.

A is an elevator-shaft, and B is an elevator-car which may be guided insaid shaft in any well-known manner.

0 is the lifting or power cable, which is secured to the cross-head ofthe car A and passes over the pulley D, secured to the shaft E of thelarge gear F of the accelerating compound system of gears F G H I, andfrom thence over a guide-pulley K down to the power-drum L for operatingthe cable 0 for lifting the car.

M is a sprocket-wheel secured to the shaft E, and N is a similar wheelsecured to the shaft 0 of the pulley K.

P is a sprocket-chain secured at one end to the cross-head of the car Aand which passes over the wheels M and N and terminating in the weightQ.

the drum on the gear-shaft.

B is the governor-fan, attached to the shaft S of thegear I and providedwith the radial arms at, having the the folding wings or pinions b. Thefan R should be so attached to the shaft S that when the car Ais drawnup the rear of the wings I) will advance first in the direction of thearrow 1, Fig. 2, and close said wings, as shown in Fig. 5, and so as tooffer the least'resistance to the air, and when the car descends the fanshould revolve in the opposite direction or in the direction of thearrow 2, Fig. 2. The front of the wings I) will thus strike theair'first and be forced open,-as shown in Fig. 6, and the air willoflt'ersuch resistance to them that the velocity of the descent of thecar will be greatly retarded and regulated. The accelerating-gears andtheir arrangement are substantially the same as in Patent No. 287,922above referred to. So, also, are the construction and application of thegovernor-fan. They need, therefore, no detailed description.

In my invention the sprocket-chain P and the sprocket-wheels M and Ntake the place of the weighted rope and the drum and pulley over whichsaid rope runs in said patent, my sprocket-wheel M being substituted forThe tractionpulleys D and K for the lifting-cable I secure to'the shaftsof the sprockets M and N, respectively, instead of having thetractionpulleys on separate shafts, as in said patent.

By the application of the sprocket-wheel and the traction-pulley of thelifting-cable to the shaft of the large gear-wheel all danger from a toorapid revolution of. said tractionwheel and a probable slipping of saidcable during the descent of the car is avoided. Also, as thesprocket-wheels are on the same shafts as the driving-cable pulleys, thechain with its Weight will travelin unison with the cable, will beprecluded from slipping by its gearing with the sprocket-wheels, andwill exert a direct and positive action upon the pulleys and cable toassist the rise of the car and 'to retard its descent, instead of suchaction being A an indirect one, as in the patent above referred to. Byreason of the pulleys of the is rendered much more compact and less cumbersome, a most important consideration.

If desired, the governor-fan may be duplicated, another being securedto-the opposite end of the shaft S, or additional lifting-cables andchains, traction-pulleys, and sprocketwheels may be used, the pulleysand wheels 10 be secured to theshafts E and S.

In place of the series of gears for causing accelerated rotation aseries of any other equivalent devices may be used for this purose.

As the lifting-cable and sprocket-chain both pass over wheels secured tothe same shaft, if there should be a hitch in either the cable or thechain, so as to stop its movement, the movement of the other would alsobe stopped and the car would remain stationary, thereby indicating tothe engineer that something was out of order, so he could stop themachinery and remedy the difficulty. After the difficulty is remediedthe movement of either the cable or the chain will assist in themovement of the other by rotating the wheel overwhich it passes. Again,if the sprocket chain should break back of the sprocket-wheels or theweight be off the chain would not slip, but would be controlled by themovement of the lifting-cable and move in unison therewith by reason ofthe pulley over which the cable passes and the sprocket-chain beingsecured on the same shaft and moving in unison. Again, if the cableshould break and there should also be no counterweight on the chain thedescent of the car wouldstill be retarded, as the chain, which isattached to the car, would be held in engagement with itssprocket'wheels and their rotation would be regulated by theaccelerating-gears and fan.

From the above it will be seen that it is not absolutely essential thata lifting-cable be used as a means for raising and lowering theelevator, for if the sprocket-chain be secured to the car and passaround and engage with the sprocket-wheels the counterweight on thechain will assistin lifting the car and the descending car will, throughthe chain and sprocket wheels, act to regulate the descent of the car inthe same way as if the lifting-cable were used. Again, when thelifting-cable passes over rollers having their movements entirelyindependent of the rollers over which the safety-cable passes and anordinary cable is used for the lifting, as in Patent No. 287,922, it isnecessary to make at leasttwo turns of said cable over a pulley or drumto prevent the cable from slipping. When this construction is used, thetwo turns of the cable will, especially as the hanging portions of thecable will always tend to assume a vertical position,bind and rubagainst each other, thus causing much friction to the cable and tend towear it out. When the sprocket chain and wheels are used, as in thisapplication, the chain simply passes over the sprocket-wheels, is heldby them, the

chain does not slip, and there is no binding of two parts of the chainagainst each other. Again, as wire cables are usually used both forlifting and safety cables, if such a cable be wound around a drum orpulley with two or more turns the smaller the diameter of the pulley ordrum the narrower will be its turns and the more apt are the wirestrands of the cable to break, and thus weaken the cable. Consequentlyit will be found necessary to use a pulley or drum of large enoughdiameter to spread out the cable to prevent such narrow bends. When asprocket-chain is used, there are no wire strands to break and there isno danger of weakening the chain by having the sprocket-wheel over whichthe chain passes of quite small diameter.

What I claim as new, and desire to secure by Letters Patent, is

1. A regulator for controlling the descent of elevator-cars, consistingof a series of rotary devices for causing accelerated rotation, a devicearranged to be driven by said accelerating devices and adapted to offerresistance to the air when revolving in one direction, and to offer nosuch resistance when re volving in the opposite direction, asprocketwheel secured to the same shaft as one of the acceleratingdevices, a sprocket-chain passing over and engaging with said wheel, andadapted to have a Weight suspended from one of its ends, and its otherend adapted to be attached to the car, all as and for the purposes setforth.

2. A regulator for controlling the descent of elevator-cars, consistingof a series of rotary devices for causing accelerated rotation, a devicearranged to be driven by said accelerating devices and adapted to offerresistance to the air when revolving in one direction, and to offer nosuch resistance when revolving in the opposite direction, a sprocketwheel secured to the same shaft as one of the accelerating devices, asprocket-chain passing over and engaging with said wheel and having aweight suspended from one of its ends, and its other end adapted to beattached to the car, all as and for the purposes Set forth.

A regulator for controlling the descent of elevator-cars, consisting ofa series of rotary devices for causing accelerated rotation, a fanhaving folding wings arranged to be driven by said accelerating devices,a sprocket-wheel secured to the same shaft as one of the acceleratingdevices, asprocketchain passing over and engaging with said wheel andadapted to have a weight suspended from one of its ends, and its otherend adapted to be attached to the car, all as and for the purposes setforth 4. A regulator for controlling the descent of elevator-cars,consisting of a series of rotary devices for causing acceleratedrotation, a device arranged to be driven by said accelerating devicesand adapted to ofier resistance to the air when revolving in onedirection, and to offer no such resistance when revolving in theopposite direction, a pulley and sprocket wheel secured to the sameshaft as one of the accelerating devices, a sprocket-chain passing overand engaging with said Wheel and having provision for a weight to besuspended from one of its ends, and its other end adapted to be attachedto the car, the said pulley adapted to have the lifting-cable pass overit in the same direction as the chain, all as and for the purposes setforth.

5. A regulator for controlling the descent of elevator-cars consistingof a series of accelerating-gears, a device arranged to be driven by oneof said gears, and adapted to offer resistance to the air when revolvingin one direction, and to offer no such resistance when revolving in theopposite direction, a pulley and sprocket-wheel secured to the sameshaft as one of said gears, a sprocket-chain passing over and engagingwith said wheel and having provision for a Weight to be suspended fromone of its ends, and its other end adapted to be attached to the car,and said pulley adapted to have the lifting-cable pass over itin thesame direction as the chain, all as and for the purposes set forth.

6. A regulator for controlling the descent of elevator-cars, consistingof a series of accelerating-gears, a fan having folding wings arrangedto be driven by said gears, a pulley and sprocket-wheel secured to theshaft of one of said gears, a sprocket-chain passing over and engagingwith said wheel and having a weight suspended from one of its ends, andits other end adapted to be attached to the car, and said pulley adaptedto have the lifting-cable pass over it in the same direction as thechain, all as and for the purposes set forth.

'7. A regulator for controlling the descent of elevator-cars, consistingof a series of accelerating-gears, a fan having folding wings arrangedto be driven by said gears, a pulley and sprocket-wheel secured to theshaft of one of said gears, a sprocket-chain passing over and engagingwith said wheel and having a weight suspended from one of its ends, andits other end adapted to be attached to the car, said pulley adapted tohave the lifting-cable pass over it in the same direction as the chain,and a guide-pulley situated between the other pulley and the source ofpower, for the lifting-cable to pass over, all as and for the purposesset forth.

8. A regulator for controlling the descent of elevator-cars, consistingof a series of accelerating-gears, a fan having folded wings arranged tobe driven by said gears, a pulley and sprocket-wheel secured to theshaft of one of said gears, a sprocket-chain passing over and engagingwith said wheel and having a weight suspended from one of its ends, andits other end adapted to be attached to the car, said pulley adapted tohave the lifting-cable pass over it in the same direction as the chain,and a gnidesprocket-wheel situated between the other wheel and theweight for the sprocket-chain to pass over, all as and for the purposesset forth.

9. A regulator for controlling the descent of elevator-cars, consistingof a series of r0- tary devices for causing accelerated rotation, adevice arranged to be driven by said accelerating devices and adapted tooffer resistance to the air when revolving in one direction, and tooffer no such resistance when revolving in the opposite direction, apulley and sprocket-wheel secured to the same shaft as one of saidaccelerating devices,asprocketchain passing over and engaging with saidwheel and having a weight suspended from one of its ends, and its otherend adapted to be attached to the car and the lifting-cable passing oversaid pulley in the same direction as the chain, all as and for thepurposes set forth.

10. A regulator for controlling the descent of elevator-cars, consistingof a series of accelerating-gears, a fan having folding wings arrangedto be driven by said gears, a pulley and sprocket-wheel secured to theshaft of one of said gears, a sprocket-chain passing over and engagingwith said wheel and having a weight suspended from one of its ends, andits other end adapted to be attached to the car, said pulley adapted tohave the lifting-cable pass over it in the same direction as the chain,a guide -pulley and a guide sprocket-wheel for guiding the lifting-cableand the sprocket-chain to the source of power and to the weightrespectively, all as and for the purposes set forth.

11. A regulator for controlling the descent of elevator-cars, consistingof a series of accelerating-gears, a fan having folding wings arrangedto be driven by said gears, a pulley and sprocket-wheel secured to theshaft of one of said gears, a sprocket-chain passing over and engagingwith said wheel and having a weight suspended from one of its ends, andits other end adapted to be attached to the car, said pulley adapted tohave the lifting-cable pass over it in the same direction as the chain,a guidepulley and a guide sprocket-wheel both on the same shaft, forguiding the lifting-cable and the sprocketchain to the source of powerand to the weight respectively, all as and for the purposes set forth.

12. A regulator for controlling the descent of elevator-cars, consistingof a series of accelerating-gears, a fan having folding wings arrangedto be driven by said gears, a pulley and sprocket-wheel secured to theshaft of one of said gears, a sprocket-chainpassing over and engagingwith said wheel and having a weight suspended from one of its ends, andits other end adapted to be attached to the car, said pulley adapted tohave the lift- In testimony whereof I have signed my name to thisspecification in the presence of two subscribing witnesses.

ACHILLE GALLINANT.

ing-cable pass over it in the same direction as the chain, aguide-pulley and a. guide sprocket-wheel both secured on the same shaft,for guiding the lifting-cable and the 5 sprocket-chain to the source ofpower and to 1 Witnesses the Weight respectively, all as and for thePENNINGTON HALsTED, purposes set forth.

JOHN O. GAMPLER.

